body{
    margin-left: 1.5cm;
    margin-top: 1cm;
}

.show {
    box-shadow: 3px;
    border: none;
    width: 4cm;
    height: 2cm;
    font-size: 24px;
    text-shadow: 2px 2px 3px #bbb;
    cursor: pointer;
    display: inline;
    margin: 0.3cm;
}
button:hover {
    text-shadow: 3px 3px 5px #888;
    border-width: 2px;
    border-style: outset;
    border-color: -internal-light-dark(rgb(118, 118, 118), rgb(133, 133, 133));
    border-image: initial;
}

#composition {
    background-image: url("composition.jpg");
}